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A sine function has an amplitude of 4/7, period of 2pi, horizontal shift of -3pi, and vertical shift of 1. 
What is the y-value of the positive function at x= pi/2? 

8 years ago

Answers

Reiny
taking your data:

y = (4/7)sin (x + 3π) + 1

when x = π/2
y = (4/7)sin(π/2+3π) = 1
= (4/7)sin (7π/2) + 1
= (4/7)(-1) + 1
= 3/7
8 years ago

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